Deburring machine



June 23, 1931. w. PERKS ,811,519

DEBURRINQ MACHINE Filed March 1, 192 2 Sheets-Sheetl N VE N OR Wq/ver zfks awa 06M June 23, 1931. w. PERKS ,81 ,519

DEBURRING MACHINE Filed March 1, 1928 2 Sheets-Sheet 2 I N v E o Wei/fer Park H TTOR Patented June 23, 1931 UNITED; STATES PATENT orrlce WALTER PERKS, OF IgONDQN, ENG-LAND, ASSIGNOR TO WILLIAM VICARS, F ROSE BAY,

NEAR SYDNEY, AUSTRALIA DEBURRING MACHINE Application filed March 1, 1928, Serial No. 258,397, and in Australia July 18, 1927.

This invention relates to machines for removing burrs, seeds, and other entangled matter from wool on sheep skins and from hair or fur or skins taken from other animals. It relates in particular to deburring machines of the type in which the wool, hair, or fur on the outer side of skins is acted on by spreaders and heaters which are fixed on the peripheral surface of a rotating'drum.

In the machine in which the present lnvention consists, the skins in either wet or dry condition are hung over and clamped to carrier boards, and these boards are drawn vertically upwards between fast rotating drums which are armed withparting blades and heaters. The drums areadjustable for clearance required for the passage of the skin clad boards between them, and. water 1s sprayed on the skin whilst it is being acted on by the parting blades and heaters on the drums. The carrier boards are suspended by top corner lugs on continuous chain flights. The skins are hung over the boards, and claw links in the chains pick up the boards as they are fed into the machine over a slideway, and carry them up between the drums, finally delivering them onto a take-off S11Cl6W3.y. The dehurred skins may be subjected to a finish ng treatment in a following machine of like construction. Finally, theclamps are freed and the dehurred skins removedfrom the boards, and the boards are then returned to the starting point to be re-used to carry other skins through the machine or machines.

In the accompanying drawmgs I Fig. 1 is a longitudinal vertlcal section through the machine;

Fig. 2 is a front end'elevational VlBW;

Fig. 3 is a fragmentary longitudinal sectional elevation;

Fig. 4' shows three fragmentary end elevational views of the parting knuckles and beaterswith which the-drum discs are armed;

and r a Fig.- 5- is a perspective viewof one of the discs. The drums are built up'of assemblies or these discs keyed on a shaft, with the knuckles arranged in helical relation.

The skins are hung on the carrier boards 11 with the wool, hair or fur side: outward,

and they are secured against slipping by means of clips or clamps 12 of any convenient pattern. The boards 11 are provided with lugs 13 extending from their top corners; the boards 11 are suspended on these lugs 13 in their passage through the machine, 14 represents feed-in runways, and 15 delivery runways, 16-16 are flights of continuous chain belts containing hook links 17 at intervals; these links are adapted for picking up the lugs 13 and carrying the skin loaded boards through the machine. 18 are driver sprocket wheels, 19 top carrier sprocket wheels, and 20 tensioning jockey sprocket wheels over which the chain flights 16-16 run. The jockey sprockets 20 have slide bearings 21 and screw adjusters 22, by setting which the chain flights are held at desirable tension. I

23 and 24 are the deburring drums, and 25 and 26 mangle rollers (smooth faced) locatedv above and parallel to them. 27 are vertical guideways in the side frames 28 in which the lugs 13 run during the course of vertical movement of the skin loaded boards through the machine. 29 are horizontal slides which carry the sliding bearings 30 for the shafts 47 of the drums 23 and 24. 31 are helical springs bearing against the sliding bearmgs 3O andhavlng screw adjusted abut- .ments 32. 33 are similar slides for the axle tensioning springs acting toforce these rollers towards each other, and 37 are screw ad- 7 justed abutments for the springs 36. 38 are spacing wedges for regulating the clearance distance between the drums 23 and 24; they work between ball bearings 46 which are fitted on the drum shafts 47. 49 are compensating levers which are keyed on the'ends of a cross shaft 50 and connected together by a rod 147 51 are slots in the levers 49, which engage ofiset pins 52 fixed in the sides of the links 53.; the wedges 38 are suspended by these links, and their position is readily adjusted by an operative, through the bar 147 and levers 49 which counterbalance the weight of the wedges. Each of the deburring drums 2324 is built up of an assembly of knuckle discs (Fig., 5) fixedv axially 'onthe drum shaft 47 and arranged so that the beaters 54 are disposed in helical, order (see Figs. 2 and .3) on the peripheries of the drums.

Usually, three such beaters 54 are fitted on each disc. One of these beaters 54a is set erect, and the others 547) and 540, are offset to left and right respectively. The parting knuckles 60, 61, and 62 should also be similarly set to centre and offset to the sides respectively. The heaters 54 are tubiform, or

they are cupped on'their leading faces; they are best made by riveting, bolting or otherwise suitably attaching the ends of U-shaped .metal loops to the sides of the parting knuckles 60, 61,62. Their leading faces are tapered thin to blunt edges. The leading edges ofthe parting knuckles 60, 61, 62 are similarly trimmed to blunt edges, and two of'them are offset in correspondence with the offset of thebeaters which they carry. Each 7 Drive is applied via the countershafts and sions are subject to variation, but the most' advantageous results will'be'obtained when kit) belts to both ends of both drum shafts 47 48'are water spray pipes perforated to deliver fine sprays of water downwardly over the skins during their ascent between the drums In operation, the beater drums are rotated about 700 revolutions per minute and the linear speed of the chain flights is about six feet per minute. The claw links on the chains are usually locatedrabout-three feet apart, and the skin'boards are about two feet six inches in depth. These speeds and dimenthe figures just stated are approximately observed. y

The operation ofthe machine is as follows: The skins 10 are hung over the boards 11 and clipped or clamped on by means of the devices 12 so that the skins are prevented from accidental slippage during their translation through the machines. The boards so loaded with skins are then fed into the machines over the runway 14, this runway consisting of rails onwhich the lugs 13 run; this runway carries the boards down to a stop where the lugs 13 are in the path ofmovement of the chain claws 17. As they ascend, these claws pick up the .skin loaded boardsone by one and carry them vertically upwards between the beater drums and the mangle rollers.

When the skin loaded boards have passed to the upper part-of the machine they are carried over by the chains onto the delivery runthrough said path.

way rails, and they slide along these rails on their lugs 13 as seen in Fig. 1 to a take-ofl' place. Thence they may go through a second treatment in a like machine. In practice, a very few burrs are found along the middle of the back, and consequently that part of the skin which is wrapped overthe top edges of the skin boards is not required to be subjected to the beater action. The direction of the rotation of the drums is shown by the arrows-in Fig. 1. In this rotation of the drums-the wool, hair or fur, is parted and the tubiform beaters are rapidly traversed through the partings; they catch hold of any burr or like entangled material, tearing it out from the fibres and casting it adrift.

said traveling members, and cooperating means carried by said traveling members'and skin-carrying members automatically operative to engage'the latter and move them through said verticalpath and to release the skin-carrying members after their'passage 2. In a deburring machine, a pair of endless traveling members spaced apart from each other and disposed for movement through a vertical'path, a plurality of skincarryingmembers, means for delivering said members in succession to a position between said traveling members, cooperating means carried by said traveling members and skincarrying members automatically operative to engage the latter and move them through said vertical path and to release the skin-carrying members after their passage through said path, and means for conducting the skin-carrying members away from said traveling members. v 1

3'. In a deburring machine, a pair of end less traveling members spaced apart from each other and disposed for movement through a vertical path, a plurality of skincarrying members, means for delivering said members in succession to a position between said traveling members, cooperating means carried by said traveling members and skincarrying members automatically operative to engage the latter and move them through said vertical ,path and to release the skin-carrying -members after their passage through said path, and means for spraying water on the 4. In a deburring machine, a pair of endless traveling members spaced apart from each other and disposed for movement through a vertical path, a plurality of skincarrying members, means for delivering said members in succession to a position between said traveling members, cooperating means carried by said traveling members and skincarrying members automatically operative to engage the latter and move them through said vertical path and to release the skin-carrying members after their passage through said path, deburring means maintained under tension at opposite sides of said skin-carrying members during their passage through the vertical path, and adjustable means between said deburring means for limiting the action thereof.

5. In a deburring machine, a pair of end less traveling members spaced apart from each other and disposed for movement through a vertical path, a plurality of skincarrying members, means for delivering said members in succession to a position between said traveling members, cooperating means carried by said traveling members and skincarrying members automatically operative to engage the latter and move them through said vertical path and to release the skincarrying members after their passage through said path, a pair of deburring drums disposed at opposite sides of said skin-carrying members during their passage through the vertical path, tension means for urging said drums toward each other, a movable wedge-shaped member disposed between said drums for limiting the action of said tension means, and means for adjusting the position of said wedge.

In testimony whereof I afiix my signature.

WALTER PERKS. 

